I want to create a role in openstack with some limititations?

I want to create a role in openstack with some limitations, the scenario is like this:

"I have created a project and assigned an user who is able to create instances, networks etc., now I want a role which would only allow the user to view the logs and ssh into the instance for maintenance, he cannot create instances in the project as it's the rights of another user, so is it possible to create such roles?"